Entrance switch and service box



June 2, 1931.

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ENTRANCE SWITCH AND SERVICE BOX Filed April 28, 1927 4 Sheets-Sheet 4 Lgvvuentoz Fig: 6 Jade 0h 6. 'l/EZDZJ Patented June 2, 1931 UNITED STATESPATENT OFFICE JOSEPH C. LEWIS, OF MINERVA, OHIO, ASSIGNOR TO CHARLES W.KEPLINGER, RE-

CEIVER OF THE AMERICAN ELECTRIC SWITCH CORPORATION, OF MINERVA, OHIO,

A CORPORATION OF DELAWARE ENTRANCE SWITCH AND SERVICE BOX Applicationfiled April 28,

This invention relates to improvements in entrance or service boxconstruction such'as is used at the entrance of an electric line 'into abuilding, and more particularly to the construction of the entranceswitch which is located within the box, and to the cooperation of theswitch with the box whereby, regardless of the position of the switch,access cannot be had to the inside 10 of the box.

fuse blocks or the like.

The object of the present invention is to improvethe constructiondisclosed in the application of Joseph G. Lewis, Serial No. 44,609

now Patent No. 1,770,210, issued July 8, 1930,

by eliminating the bracket for supporting the switch handle andproviding a rod extending entirely through the box for pivotallysupporting the switch handle. 7

An embodiment of the invention is illustrated in the accompanyingdrawings, in which Figure l is a plan elevation of the box showing theimproved switch mechanism, the cover or door of the box being removed;

1 showing the switch in closed position;

Fig. 3, a similar view showing the switch in open position;

Fig. 4, a transverse section on the line 4-4, Fig. 1; 4

Fig. 5, a detached perspective view of one f the links which connect theswitch blades to the handle;

Fig. 6, a view similar to Fig. 1, showing a single blade switchconstructed in accordance with the invention, and

Fig. 7, a perspective view of the improved switch box.

Similar numerals refer to similar parts throughout the drawings.

The box 1 is preferably formed of sheet metal and is of suflicient sizeto accommodate the switch block 2 and one or more This switch block isformed of suitable insulation material and connected to the bottom ofthe box as Fig. 2, a section on the line 22, Figure 1927. Serial No.187,209.

either a single or multiple blade switch may be accommodated thereon.

In Figures 1 to 5 inclusive of thedrawings a double blade switch isillustrated, the two switch blades 4 being each pivoted as at 5 upon abracket 6 mounted upon the switch block, each blade being arranged toengage a pair of spring jaws .7 mounted upon the block. Stops 4 and 7are punched from the blades and jaws respectively to limit theopeningandclosing movement of the blades.

A rod 8 is located through the box, at a point spaced above the bottomthereof, and connected to the side walls in any suitable manner as byriveting. the ends of the rod thereto as shown at 9, or by the cotterpins 9 and the switch handle or handles 10 are pivotally mounted uponthis red:

This handle is formed of insulation material and is provided with thereduced,

peripheral portion 11, normally extending through the slot '12, in thedoor or cover 18, of the box, and having a radial stem 14, for manuallyoperating the same.

Arcuate shoulders are formed upon each side of the handle, toextendbeyond each side of the slot l2,'in the door or cover,

inorder to prevent a'ccess'to the interior of the box, through saidslot, regardless of the positionfof the handle. The inner side of thehandle is recessed asat 17 for'the connectionof-the link or links,generally indicated at' 18, by which the handle is connected to theswitch blades.

Where only one-switch blade isused as in Figure 6, this link may beS-shaped', as illustratedin the application, Serial No. 44,609, abovereferred to, and where two iswitch blades are used, as illustrated inFigures '1 to 5 inclusive,theshape of the link is modified,.the centralportion of each half of the. link being angularly located as indicatedat 19, and having the angular ends 20 and 21 for pivotalconnection tothe handle, f and ,bladesre'speotively.

-The, angular end 20 of the link extends into the recess 17 and isarranged to be piv;

otally connected tothe handle as. by the removable. pin 22. Thefouterangular end V 21 of the link is adapted to engage the stop shoulder 4 tolimit the opening movement of the switch blade, as shown in Figure 3,and the switch blade contacts with the stop shoulder 7"-, when the bladeis in the closed position asshown in Figure .2, thus relieving the partsfrom strain.

The arcuate portion of the handle entirely closes the slot 13 in thedoor, at all times,

thus preventing access to the interior of the box through this slot.

When it is desired to pack the box for shipping, in order to economizespace, the pin 22 is removed, detaching the link from the switch handle,permitting the handle to be rotated upon the rod 8 into the positionshown in broken lines in Figure 2., the link assuming the broken'lineposition shown in this figure. The lid or door 13 may then be closedtightly upon the box without any parts protruding therethrough,permitting the boxes to be stacked together in a minimum space. i

From the above it will be evident that the construction is simplifiedand space within the box is economized by providing the rod 18, insteadof the bracket shown in the application,'for supporting the switchhandle. This rod leaves the entire bottom of the box free for theinstallation of fuse blocks or other necessary devices in the spaceoccupied by this bracket in the application referred to.

I claim:

1. A sheet metal switch box provided with a slot, a switch blockwithinthe box, a switch blade pivotally mounted on the switch block, arod located through the box and supported in the side walls thereof, andan operating handle for the blade pivotally mounted upon the rod andlocated through the slot.

' 2. A sheet metal switch box provided with a slot, a switch blockwithin'the box,

a' switch blade. pivotally mounted on the switch block, a rod locatedthrough the; box

3. A sheet metal switch box provided =with a slot, a switch block withinthe box, a

switch blade pivotally mounted on the switch block, a rod located?through the box and supported in thesid-e walls thereof, and anoperating handle for the blade. pivotally -mounted upon the rod andhaving an arouon the switch bladeand jaw for limiting the movement ofthe blade in either direction.

6; A sheet metal switch box a door for the box provided with .a slot, aswitch block within the box, a switch blade pivotally .mounted on theswitch block, spring jaws on'the switch block for receiving said blade,

a'rod located through the box and supported in the side walls thereof,an operating handle for the blade pivotally mounted upon the rod andlocated through the slot, a rigid link pivotally connecting the handleto the blade, :and the blade, link and jaws being arranged to cooperateto limit the opening and closing movements of'the blade.

7. A sheet metal switch box, a door for the box provided with a. slot, aswitch blade pivotally mounted at one end within the box, a rod locatedthrough the box and supported at'the side walls thereof, anoperatinghandle for the blade pivotally mounted upon the rod and located throughthe slot, said handle having a recess therein, and a rigid link pivotedat one end within the recess of the handle and at the other end to anintermediate portion of the blade.

In testimony that I claim the above, I

have hereunto subscribed my name.

JOSEPH'C. LEWIS.

and supported in the side walls'thereof, and 7 ate portion located;through the slot and V closingthe same in all positions.

4. A sheet metallswi toh box provided withaslot, a switch block withinthe box, a switch blade pivotally mounted on the switch block, a rodlocated through the. box

and supported in the side walls thereof, and l I V i

